Tube compressor



March 26, 1940. J. BAMBER TUBE COMPRESSOR Filed June 16, 1939 2 Sheets-Sheet 1 R m w W.

ATTORNEYS.

March 26, 1940.

J. BAMBER TUBE COMPRESSOR Filed June 16, 1939 2 Sheets-Sheet 2 L a w a. w .w a

4 a 2/ w 4 W Jae v72 Zambezi IN V EN TOR A TTORNEYS.

Patented Mar. 26, 1940 UNITED STATES PATENT 01=1=1cE TUBE COMPRESSOR Joseph Bamber, Stamford, Conn. Application June 16, 1939, serial No. 279,538

3 Claims. (01. 22l-60) The forward edges of the end walls 5 are This invention aims to provide novel means for squeezing paste, such astooth paste or shaving cream, out of a collapsible tube. The squeezing is brought about by cooperating rollers, and

one object of the invention is to provide novel means for mounting the rollers for rotation, and. to provide a spring means mounted in a novel way, to cause the rollers to coact. The invention aims, further, to supply a device of the class described which, owing to its particular construction, can be manufactured cheaply and sold at small cost.

It is within the province of the disclosure to improve generally and to enhance the utility of devices of that type to which the present invention appertains.

With the above and other objects in view, which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of 'construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may be made within the scope of what is claimed, without departing from the spirit of thelnvention.

In the accompanying drawings:

Fig. 1 shows in front elevation, a device constructed in accordance with the invention;

Fig. 2 is a longitudinal section, parts remaining in elevation;

Fig. 3 is a section. on the line 3-3 of Fig. 1, parts appearing in elevation;

Fig. 4 is a horizontal section showing a modification;

Fig. 5 is a vertical section of the modification;

Fig. 6 is a vertical transverse section of the modification.

The device forming the subject matter of this application may be made of any desired material, metal being preferred. It includes a casing, which, as a whole, is marked by the letter C. The casing C includes a base I, provided on its rear edge and intermediate its ends with an upstanding lug 2. At its forward edge, the base I has an upstanding front wall 3 provided with a forwardly curved lip 4, constituting a rest on which the tube (not shown) may ride, during the squeezing operation, without danger that the tube will be torn open.

Upstanding parallel end walls 5 are secured to the base I. 'A curved cover 6 extends over the end walls 5, and downwardly to the base I, the cover 6 being attached to the lug 2 on the base I by a securing element 1, such as a screw.

straight and vertical, as shown at 8, and the forward edge'of the cover I5 is aligned vertically with the edges 8, the forward edge of the cover 6 :cooperating with the rest 4 to form an opening 9,

through which the tube to be compressed may be introduced into the field of operation of the tube compressing means.

Forwardly inclined, U-shaped guides ID are secured to the end walls 5. The forward arms of the guides 0 extend downwardly to the base I, but the lower ends of the rear arms of the guides are spaced from the base, to define shoulders I I.

A first roller I2 is journaled for rotation in the crowns of the guides I0 and is provided with a tube holding means, which may be an elongated slot-I4. The first roller I2 is supplied with a circumscribing groove I5, which, receiving a portion of one end wall 5, retains the roller in the casing C, and in the guides ID, for rotation. The roller I2 projects outwardly beyond the said end wall 5. Any suitable means may be provided for rotating the roller I2, for instance a turning disk I6 mounted on the exposed end of the roller.

A second or lower roller II rotates in contact with the first or upper roller I2. The ends of the second roller I! are received for rotation within the guides I0, and the end walls 5 of the casing C prevent the roller H from moving endwise.

Adjacent to its ends, the roller I! is supplied with circumferential grooves I8.

Studs or supports I9 project inwardly from the end walls 5, adjacent to the. base I of the casing C. About the studs I9 are engaged helical springs 20, each comprising a long upper arm 2i, and a short lower arm 22. The arms 2| of the springs 20 are received in the grooves I8 8 of the roller I1, and press that roller upwardly the short arms 22 of the springs 20 are engaged.

The device may be mounted in any desired way. For instance, the base I may be provided with a dovetail groove 23, extending through the front wall 3, and adapted to cooperate, slidably, with a correspondingly shaped rib 24 on a support 25.

Littleneed be said about the operation of the device. One end of a collapsible tube is inserted into the slot I 4 of the roller [2, the tube is wound around the roller I2 when that roller is rotated by means of the disk I6. The tube is squeezed between the rollers 12 and I1, and the contents of the tube is expelled in an obvious manner.

In Fig. 4, 5 and 6, parts hereinbefore described have been designated by numerals already used, with the suffix a. In this form of the invention, the support25a is vertical instead of horizontal, and the opening 8a is at the bottom of the easing. In place of the guides Ilia, there are keyhole slots 5!? in the end walls 5a. The rollers lid and lid. have circumscribing grooves 5|. The rollers Ella. and Na can be inserted endwise into the enlarged parts of the keyhole slots 50, and then moved crosswise until the endwalls 5a, at the reduced portions of the keyhole slots 50 are received in grooves 5!. The spring 2Ua d lu -22a holds the rollers for rotation, in the position depicted in Fig. 6. It is obvious that the support 25a may be disposed horizontally, that being a mere users option, and when the support is so located, the structural similarity between the form-of Fig-6 and the form of Fig. 3

will be the more plainly manifest.

Having thus described the invention, what is claimed is:

1. In a device for expelling material from a collapsible tube, a casing comprising a'base and end walls, inverted U-shaped guides secured to the end walls, the guides comprising rear arms spaced from the base to define shoulders, a first roller journaled in the crowns of the guides, a second roller cooperating with the first roller and having its ends received rotatably and slida-bly in the guides, a supporting means carried by the end walls, helical springs mounted on the supporting means, each spring comprising an arm exerting pressure on the second roller, to urge it toward the first roller, and another arm engaged with one of the shoulders; and means for rotating one of the rollers.

2. In a device for compressing a collapsible tube to expel the contents thereof, a casing comprising end walls, and a base provided at its rear edge with an upstanding anchorage element, the casing comprising an upstanding front wall having a rounded rest for the tube to become pressed, a cover extended along the upper portions of the end walls and downwardly to the base, the forward edge of the cover being spaced from the rest, to define a tube receiving opening, cooperating pressure rollers located to the rear of the opening, means for mounting the rollers for rotation on the end walls, and fastening means conmeeting the cover with the anchorage element.

3. In a device for expelling material from a collapsible tube, a casing comprising a base and end walls, the end walls being provided with keyhole slots, first and second cooperating rollers insertible into the casing by way of the enlarged portions of the keyhole slots, the rollers being lodged for rotation in the restricted portions of the keyhole slots and having circumferential grooves receiving the end walls, a supporting means carried by the end walls, helical springs mounted on the supporting means, each spring ccmprisingan arm exerting pressure on the secand roller, to urge it toward the first roller, and another arm engaged with the base: and means for rotating one of the rollers.

JOSEPH BAMIBER. 

